What is the charge on cation formed from the following elements? For those elements that form more than one cation indicate the ionic charges most commonly observed.1. GalliumExpress your answer as an ion(s) separated by a comma.2.NickelExpress your answer as an ion(s) separated by a comma.3.CopperExpress your answer as an ion(s) separated by a comma.4.StrontiumExpress your answer as an ion(s) separated by a comma.
